Charging device for kilns



J1me 1952 A. T. GRISENTHWAITE ET AL 2,500,053

CHARGING DEVICE FOR KILNS 2 SHEETS-SHEET 1 Filed Aug. 6, 1947 June 19512 A. T. GRISENTHWAITE ET AL 2,600,053

CHARGING PEVICE FOR KILNS Filed Aug 6, 1947 2 SHEETSSHEET 2 Patented June 10, 1952 Q 2,600,053 CHARGJNGP DEVICE (FORSIK'ILNS ArthurJI'ur-ner,Grisenthwaite,and fiecrge Henry j lronsg Cruse,., Stockton-on Tees, "England, as- Si ors to Thefower-Gas, CO 'DQrationLimited,

" StocktonmH-Tees, England,- a British company gzApplicMioxrjAugust 6, 1947;SecialNo;- 766,848 ,=--In=. Great-BritainJanuM'y:;26,;1940

Section lgPublic Law 6 90; Augusti8i1946 Patent expires J anuary zfi; -1960 Thepresent invention-relates"toimprovements in; charging devices'for combustion" plants-such as gasproducers', kilns-and thelike-of the type in which a distributor is' provided: adj acent the inlet opening from; aichargeichamber.

Charging devices" for' this purpose gare 'usually provided with three or moreseparate'ichutes spaced evenly from one another and symmetri- ,,cally disposed relatively 'to a' centralchute or opening. j It is an object of the present invention to provide a construction whereby the position of the chutes relatively. to the'upper level of the charge in the kiln may be adjusted.

"The invention is further described-with ref- .erence to the accompanying drawings inrwhi'ch:

Figure 1 is a sectionalelevationof-onef form of construction,"the head of the gas'producer 7 being shown diagrammatically,

(Figure 2' is a corresponding plan view. The'inventionwill be more particularly described with reference to a gas ,producerpbut a .distributor :according to'the presentinvention or more can be used as desired,vwh'ich chutes l,

are preferably closed, that is to say are :preferably in the form of tubes orconduits as distinct from open channels, and lead outwardly from a central distributing cone or plate 2 to the outer l; periphery of the kiln or gas producer,:being also lsymmetrically disposed relatively to one; another and 1 to a central opening which may be shrouded by a chute central 4 of truncated form.

The conical plate2 which receives theburden may conveniently be made detachable, so that it may be renewed when worn.

The whole distributorgarrangement l, 2, 3, 4,

-.is amounted. upon, a. cylindrical or other a hollow element 5 carried by three or more rods 6 by which it can be adjusted relatively to the top of the gas producer 1, which producer may be provided in known manner with a water jacket 8 serving for the raising of steam useful in the process of gas manufacture in the gas producer.

It will be seen that, due to the castellated form of the distributor, spaces 9 are provided intermediate the chutes I, so that the level of the burden within the gas producer can be examined therebetween, and poke rods can be inserted at these places by which the level of the fuel bed or the: like:within-= the producer -can be -more accuratelyestimated.

It will be appreciated that 'by this invention lumps of fuel or other material charged to the producer or' kiln, -as the=casemaybe,--and of differing density or size, will= be --more evenly dis- "tributed over the -area -of the kiln, and further that the average depth' of I the :bed: of material within-the kilnwill be more nearlyapproximate to-its minim-um and =maximum depth, whereby -steam= raising within the jaeket -B-=will be maintained -more constant thanhas hitherto i been possible; and also-the f-uel -bed within the kiln or producer ismaintainedmore constant; sothat the gas outlet temperature will =-also-'-'be A main- ".tainedmore uniform.

*In -use the-base of -thefdistributor-will lie in contact with the bed ofnaterial-within the kiln and it is-desir-able that material beifed from* the charging valve I01 in-;sucha manner" that some f ue1;'alw,ays lies in'the: lower" ends, ofthe "chutes I and 4.

1 1These chutes :may :be "maintained rigidly in position by stiffeners; or ties I 2; as shown in Fig- The chutes may also be provided outlets I l. so thatgas. derived fromthe fuel immediately ,belowrv thepchutes-may. .pass, out. tolithe gas, outlet ;;thl1S rendering the .whole. of .lthe-ifuelpbed effective.

1 We declarethatwhatswe claimis:

l. A :chargi-ng arran ement 1- for f-urnaces lin- 1 eluding- :in-com-bination; :a-central' chute, a numerw'of -separate spaced segmentalchutes disgposed; around-saidcentralchute. in; one., annular rowsymmetrically peripherally, and ,,radially relatively to one; another and to said, central :chute and. provided with.- openings for, .the spas- '1';5 4 e- Of ;gas,,- rods :supporting saidsseparate and central chutes and means to adjust .the, ,eff ective lengthsofsaid rods,to alter lthe,.:position of the .;:;said chutes :relatiyely (to'gthe upper levelsof the chargein-theffurnace.

2. In a charging device for furnaces, a plurality of chutes within the furnace located at or a little above the normal level of the furnace bed so that fuel delivered to said chutes will be largely initially retained therein and will flow therefrom 'as combustion in the furnaces proceeds, a charging chamber immediately above said chutes, valve means controlling admission of a charge to said chamber, and means for adjusting the level of said chutes relatively to the furnace.

3. In a charging device for furnaces, a plujust the level of said chutes relatively to the furnace and to restrain rotation about a vertical axis.

4. In a charging device for furnaces, a plurality of chutes within the furnace located at or a little above the normal level of the furnace bed of said chutes so that fuel delivered to said chutes will be largely initially retained therein and will flow 4 separate chutes extending outwardly downwards from said plate, said chutes being located at or a little above the normal level of the furnace bed so that fuel delivered to said chutes will be largely initially retained therein and will flow therefrom as combustion in the furnaces proceeds, said chutes having one or more apertures therefrom as combustion in the furnaces proceeds, said chutes having one or more apertures therein to enable gas to pass therefrom into the furnace, a charging chamber immediately above said chutes, valve means controlling admission of a charge to said chamber, and'means for adjusting the level of said chutes relatively to the furnace.

5. In a charging device for furnaces, a charge receiving chamber, valve means normally closing the upper end of said chamber through which the charge is admitted thereto, aplurality of relatively fixed chutes extending in different directions from the lower part or end of said chamber to direct charged material to parts of the furnace bed, said chutes having one or more apertures therein to enable gas to pass therefrom into the furnace, and means for adjusting the level of said chutes relatively to the furnace bed.

6. A charging device for furnaces comprising upper and lower telescopic elements adapted together to form a charge receiver and of which the lower is adjustable relatively'to'the upper in an up and down direction, valve means normally closing the upper end of said upper element and through which the charges are fed into said chamber, and a plurality of relatively fixed chutes extending in different directions from the lower end of said lower element for delivering charged material to various parts of the bed in the furnace.

7. A charging device for furnaces comprising upper and lower telescopic elements adapted together to form a charge receiver and of which the lower is adjustable relatively to the upper in an up and down direction, valve means normally closing the upper end of said upper element and through which the charges are fed into said chamber, and a plurality of relatively fixed chutes extending in different directions from the lower end of said lower element for delivering charged material to various parts of the bed in the furnace, said chutes having one or more apertures therein to enable gas to pass therefrom into the furnace. l

8. In a charging device for furnaces, a distribution plate within the furnace, a central chute dependent from said plate,-a plurality of therein to enable gas to pass therefrom into the furnace, a charging chamber immediately above said chutes, valve means controlling admission of a charge to said chamber, and means for adjusting the level of said chutes relatively to the furnace.

9. In a charging device for furnaces, a charge receiving chamber, valve means normally closing the upper end of said chamber through which the charge is admitted thereto, a central chute dependent from the lower part or end of said chamber, a plurality of relatively fixed separate chutes extending outwardly downwards in different directions from the lower part or end of said chamberto direct charged material to parts of the furnace bed, said separate chutes having one or more apertures therein to enable gas to pass therefrom into the furnace, and means for adjusting the level of said chutes relatively to the furnace bed.

10. A charging device for furnaces comprising upper and lower telescopic elements adapted together to form a charge receiver and of which the lower isadjustable relatively to the upper in an up and down direction but not in a rotary direction, valve means normally closing the upper end of said upper element and through which the charges are fed into said chamber, a distribution plate forming the lower end of said lower elennFEnsNcEs CITED The following references are of record in the file of this patent:

'7 UNITED STATES PATENTS I Number Name Date 34,379 Strong Feb. 11, 1862 653,110 Morrison July 3, 1900 698,248 Bertrand Apr. 22, 1902 836,888 Parker Nov. 27, 1906 1,808,807 'De Graw June 9, 1931 1,924,820 Van Ackeren Aug 29, 1933 FOREIGN PATENTS Number Country Date Denmark Nov. 30, 1926 

